Sawtooth spring washer

Abstract

The sawtooth spring washer comprises a spring washer body, sawteeth are arranged on the front face and / or the back face of the spring washer body, the locking angle of the sawteeth of the spring washer body before installation is angle a, the locking angle of the sawteeth of the spring washer body after installation is angle b, the angle a is smaller than the angle b, and the loosening torque of the spring washer is larger than the installation torque. According to the technical scheme, the elastic gasket body is flattened after being installed, at the moment, the angle a is smaller than the angle b, the installation angle is smaller than the loosening angle, and the loosening torque is larger than the installation torque. The elastic gasket is reasonable in structural design and simple in structure, the clockwise sawteeth or the anticlockwise sawteeth play an anti-loosening role, the front face and the back face of the elastic gasket body can be locked simultaneously through the clockwise sawteeth or the anticlockwise sawteeth, the loosening torque is larger than the installation torque, and practicability is good.

Description

Technical Field

[0001] The invention relates to the technical field of elastic washers, and in particular to a serrated elastic washer. Background Art

[0002] A washer is a part between a connector and a nut. It is generally a flat metal ring used to protect the surface of the connector from being scratched by the nut and to disperse the pressure of the nut on the connector. There are also rubber elastic washers that are used to position the components for relative rotation and relative sliding. They are widely used in various threaded connections.

[0003] The existing double nut structure: although it has good anti-loosening performance, it is costly and slow to install; the double-tooth gasket structure: it is difficult to process and requires the use of other products to fix the gasket sequence (such as glue); the threaded nut: generally composed of a nut and a locking washer, although it has a simple structure and good anti-loosening performance, the installation torque requirement is also high.

[0004] The mainstream anti-loosening fasteners on the market, whether listed above or not, all have a common problem: the loosening torque is less than or equal to the installation torque. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a serrated spring washer with reasonable structural design, simple structure, the ability to lock the front and back sides at the same time, a loosening torque greater than the installation torque and good practicality.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a serrated spring gasket, comprising an elastic gasket body, the front and / or back surfaces of the elastic gasket being provided with serrations, the serration locking angle of the elastic gasket body before installation being ∠a, the serration locking angle of the elastic gasket body after installation being ∠b, ∠a being smaller than ∠b, and the loosening torque of the elastic gasket being greater than the installation torque.

[0007] The present invention is further configured such that the front and back surfaces of the elastic gasket body are both fixedly provided with forward serrations distributed in an annular array.

[0008] The present invention is further configured such that: the front and back surfaces of the elastic gasket body are both fixedly provided with reverse serrations distributed in a ring array.

[0009] The present invention is further configured as follows: the elastic gasket body is made of metal material, plastic material or nylon material, and an opening is provided at a local position of the elastic gasket body.

[0010] The present invention is further configured as follows: the sawtooth locking angle ∠a before the elastic gasket body is installed is 75-85°, and the sawtooth locking angle ∠b after the elastic gasket body is installed is 90-100°.

[0011] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention has a reasonable structural design, the elastic gasket body is flattened after installation, at this time ∠a is smaller than ∠b, the installation angle is smaller than the loosening angle, so the loosening torque is greater than the installation torque. The structure is simple, the clockwise or counterclockwise serrations play an anti-loosening role, and the front and back sides of the elastic gasket body 1 can be locked at the same time by the clockwise or counterclockwise serrations, the loosening torque is greater than the installation torque and the practicability is good.

[0012] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of the front side of the first embodiment of the present invention; Figure 3 It is a schematic structural diagram of the reverse side of the first embodiment of the present invention; Figure 4 This is a schematic diagram of the sawtooth locking angle before installation of the first embodiment of the present invention; Figure 5 This is a schematic diagram of the sawtooth locking angle after installation of the first embodiment of the present invention; Figure 6 It is a schematic diagram of the assembly of the first embodiment of the present invention with existing components before installation; Figure 7 It is a schematic diagram of the assembly of the first embodiment of the present invention with existing components after installation; Figure 8 for Figure 7 The enlarged schematic diagram of the middle part I; Fig. 9 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Fig.10 This is a schematic diagram of the structure of the front side of the second embodiment of the present invention; Fig.11 It is a schematic structural diagram of the reverse side of the second embodiment of the present invention; Fig.12 This is a schematic diagram of the sawtooth locking angle before installation of the second embodiment of the present invention; Fig.13 This is a schematic diagram of the sawtooth locking angle after installation of the second embodiment of the present invention; Fig.14 This is a schematic diagram of the assembly of the second embodiment of the present invention with existing components before installation; Fig.15 It is a schematic diagram of the assembly of the second embodiment of the present invention with existing components after installation; Fig.16 for Figure 7 Enlarged schematic diagram of part II. DETAILED DESCRIPTION

[0014] In the description of this embodiment, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "back", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore, cannot be understood as limiting the present invention. In addition, if the terms "first", "second", and "third" appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0015] Embodiment 1 See also Figures 1 to 8 The present invention discloses a serrated spring washer, comprising an elastic gasket body 1, wherein the front and / or back surfaces of the elastic gasket 1 are provided with serrations 11, the serration locking angle of the elastic gasket body 1 before installation is ∠a, the serration locking angle of the elastic gasket body 1 after installation is ∠b, ∠a is smaller than ∠b, and the loosening torque of the elastic gasket 1 is greater than the installation torque.

[0016] Preferably, the elastic angular force of the elastic gasket body 1 is F, and under the action of the elastic angular force, the loosening torque of the elastic gasket 1 is greater than the installation torque.

[0017] In order to make the structural design of the embodiment of the present invention more reasonable, as a preferred embodiment, the front and back surfaces of the elastic gasket body 1 described in this embodiment are both fixedly provided with clockwise serrations in an annular array. That is, the serrations 11 are arranged in a clockwise direction, and the number of the serrations 11 is more than 3, and the serrations 11 are all integrally provided with the elastic gasket 1.

[0018] The elastic gasket body 1 is made of metal, plastic or nylon, and an opening 12 is provided at a local position of the elastic gasket body 1 .

[0019] The sawtooth locking angle ∠a of the elastic gasket body 1 before installation is 75-85°, and the sawtooth locking angle ∠b of the elastic gasket body 1 after installation is 90-100°.

[0020] In actual application, the elastic gasket body 1 is flattened after installation. At this time, ∠a is smaller than ∠b, and the installation angle is smaller than the loosening angle, so the loosening torque is greater than the installation torque.

[0021] After installation, the elastic gasket body 1 is subjected to forces at four angles, such as Figure 8As shown, F1 is the front elastic angle stop force; F2 is the back elastic angle stop force; F3 is the front serration stop force; F4 is the back serration stop force. The structure is reasonable and simple, the serrations play a role in preventing loosening, and the front and back sides of the elastic gasket body 1 can be locked at the same time through the serrations, the loosening torque is greater than the installation torque and the practicability is good.

[0022] Embodiment 2 See also Figures 9 to 16 The second embodiment is an improvement made on the basis of the first embodiment. The difference between the second embodiment and the first embodiment is that the front and back surfaces of the elastic gasket body 1 are both fixedly provided with reverse serrations in a circular array.

[0023] In actual application, the reverse serrations play an anti-loosening role. The elastic gasket body 1 is flattened after installation. At this time, ∠a is smaller than ∠b, the installation angle is smaller than the loosening angle, and the front and back sides of the elastic gasket body 1 can be locked at the same time through the reverse serrations. The loosening torque is greater than the installation torque and has good practicality.

[0024] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A serrated spring washer, comprising an elastic washer body (1), characterized in that: The front and / or back surface of the elastic gasket (1) are provided with saw teeth (11), the saw tooth locking angle before the elastic gasket body (1) is installed is ∠a, and the saw tooth locking angle after the elastic gasket body (1) is installed is ∠b, ∠a is smaller than ∠b, and the loosening torque of the elastic gasket (1) is greater than the installation torque.

2. The serrated spring washer according to claim 1, characterized in that: The front and back surfaces of the elastic gasket body (1) are both provided with clockwise serrations distributed and fixed in a ring array.

3. The serrated spring washer according to claim 1, characterized in that: The front and back surfaces of the elastic gasket body (1) are both provided with inverse serrations distributed and fixed in a ring array.

4. A serrated spring washer according to claim 2 or 3, characterized in that: The elastic gasket body (1) is made of metal, plastic or nylon, and an opening (12) is provided at a local position of the elastic gasket body (1).

5. A serrated spring washer according to claim 2 or 3, characterized in that: The sawtooth locking angle ∠a of the elastic gasket body (1) before installation is 75-85°, and the sawtooth locking angle ∠b of the elastic gasket body (1) after installation is 90-100°.

Images